BellSense: Intelligent Coach

BellSense is a kettlebell coach.

It gives you a plan, watches how you move through the bell, and adjusts based on what your training actually shows. No More Junk Reps. Make every rep matter. Start with just your phone

The app works on its own, free. You get structured, multi-week programs and progression that responds to your performance, not only the reps you finish. Connect Apple Health and a heart rate monitor. BellSense reads your HRV, resting heart rate, and sleep into a daily readiness score, so your training accounts for how recovered you are. Log your sets and watch your volume build over time.

Add the bell sensor A small sensor mounts on your kettlebell and streams motion data to your iPhone. Now the coach sees your real output: • Automatic, verified rep counting • Speed retention across a set (how much you slow down) • Reps in reserve (how close you are to failure) • Fatigue type: skill-limited vs conditioning-limited • Cadence and rhythm consistency • Live coaching cues during your set • Power and speed indices for context

Supported exercises Ballistic: swing, snatch, clean Grind: goblet squat, one-arm row, overhead press Stability: Turkish get-up, windmill

Workout modes • Individual: one exercise, tracked round by round • Alternating: two or three exercises paired and rotated each round • Complex: several exercises chained back to back, tracked as one session

Training programs BellSense includes multiple unique programs that run from weeks to months, from beginner kettlebell foundations to advanced power and density work. Each one comes with detailed warm-ups, cool-downs, and accessory work that supports your main lifts. Instead of advancing only on reps completed, the app makes the progression call for you. It reads speed retention, fatigue, reps in reserve, training volume, heart rate and recovery, and your long-term trends, then decides whether to move you up or hold you steady.

After every session • A session score from 0 to 100 that tells you how the session went and whether you are ready to progress or should hold • Coach's remarks tied to your own data • Per-round speed, power, and duration charts • Where your rhythm started to break down

It learns you The more you train, the more it learns your lift. BellSense builds a personal movement baseline for each exercise, sharpens its rep tracking to your style, and tunes the feedback to you. The more you use it, the better the fit.

What you need • An iPhone. The app runs on its own, and programs, progression, and manual logging are free. • For automatic rep detection and the full coaching signal, add the BellSense bell sensor. See bellsense.app. • A kettlebell. • Bluetooth.

Simple tools, serious work. Lift with intention.